@misc{indiciae7ca321be29d1,
  title = {Review of lignite resources of western Tennessee and the Jackson Purchase area, western Kentucky},
  author = {Paul C. Hackley and Peter D. Warwick and Roger E. Thomas and Douglas J. Nichols},
  year = {2006},
  doi = {10.3133/ofr20061078},
  url = {https://pubs.usgs.gov/publication/ofr20061078},
  note = {Source identifier: ofr20061078}
}